Updated composer lock

The newest phar uses an old version of monolog that didn't implement the Psr interface. This causes it to break. 

```
Catchable fatal error: Argument 1 passed to Symfttpd\Gateway\BaseGateway::setLogger() must be an instance of Psr\Log\LoggerInterface, instance of Monolog\Log
ger given, called in phar:///usr/local/bin/symfttpd/src/Symfttpd/Console/Application.php on line 223 and defined in phar:///usr/local/bin/symfttpd/src/Symftt
pd/Gateway/BaseGateway.php on line 145
```

You'll need to regenerate the .phar that's online after merging this commit.